Dust-collector for flour-mills



(NoModeL) A. N. WOLF.

DUST GOLLEGTOB FOR FLOUR MILLS. No. 251,330. Patented Dec. 20,1881.

UNITED STATES PATENT OFFICE.

ABRAHAM N. WOLF, OF ALLENTOWN, PENNSYLVANIA.

DUST-COLLECTOR FOR FLOUR-MILLS.

SPECIFICATION forming part of Letters Patent No. 251,330, dated December20, 1881.

Application filed December 29, 1880. (No model.)

To all whom it may concern:

Be it known that I, A. N. WOLF, of Allentown, in the county of Lehighand State of Pennsylvania, have invented certain new and usefulImprovements in Dust Collectors for Flour-Mills; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use it, reference being bad to the accompanyingdrawings, which form part of this specification.

My invention relates to an improvement in dust-collectors forflouring-mills; and it consists in the combination of the verticalscreens, which are arranged in pairs, with verticallymoving rods, towhich the inner ends of the screens are fastened, and a means forjarringthe screens so as to shake off the dust. It further consists in thearrangementand combination of parts which will be more fully describedhereinafter.

The object of my invention is to arrange a large number of verticalmuslin screens together in a frame and upon opposite sides of thecentral air-passage, so that the air will readily pass through thescreens, leaving the dust behind, and thus collect the dust more rapidlythan has heretofore been done, and with much less trouble.

Figurel isahorizontalsection taken through a machine embodying myinvention. Fig. 2 is a vertical section of the same. Fig. 3 is aperspective of one of the screen-frames.

A represents the suction-fan, which is connected by the pipe B withthegrinding-stones or purifier, and which fan blows the dust-laden airinto the center of the dust room or frame 0, which has the air-passage Dextending all the way through it. Upon each side of this passage arearranged a series of muslin-covered frames, F, which are placed anglingtoward each other, as shown in Fig. 1. The outer ends of these screensare fastened together in pairs by the two vertical stationary rods G,and then the ends of each diverge, so as to leave a wide verticalopening for the air to freely enter between them. The dust-laden airpasses along the passage D and in between each pair of the screens andfreely escapes, leaving the dust behind adhering to the muslin. Theinner ends of the screens are secured in any suitable manner to thevertical rods I, which are connected together in pairs by means of theinclined and shouldered pieces J at their lowerends and simple straightcrosspieces'i at their upper ones. These vertical rods are connected bymeans of the hinges c with the horizontal boards a, which close theupper and lower ends of the screens, and which boards are connected tothe frame 0 at their outer ends by means of the hinges d.

Passing through the center of the lower part of the frameO is theshaftL,which is provided with a cam or cams for each shoulderedconnecting-piece J. These cams are so arranged upon the shaft that thescreens are alternately raised and then dropped downward, so as to shakethe adhering dust from the sides of the screens. Any other suitabledevices may be used forjarring the screens. As the dust drops from thescreens it falls into the bottom of the frame and is carried by theconveyer to the discharge. This conveyer is driven by a wheel, 0, (shownin dotted lines,)

upon the end of the shaft L, or in any other suitable manner.

Having thus described my invention, I claim- 1. Inadust-collector,thecombination of the screens F, arranged in pairs, andthe verticallymovable rods I, said screens having their inner endsattached to the rods, with a means for jarring the frames, substantiallyas shown.

2. The combination of the vertical rods I and screens F, theinnerendsofthe said screens being attached to said rods, with the boards a,hinges d e, the frame 0, and a means for jarring the dust from thescreens, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand this18th day of December, 1880.

ABRAHAM N. WOLF.

Witnesses:

(J. SAVIN HUBER, GEo. W. HOFFMAN.

